Improvement in locking nuts on bolts



G. J. HARRIS.

Locking-Nuts on Bolts.

No. 128,389, Paten-ted lune 25,1872.

UNITED STATES PATENT Gimme.

- GEORGE J. HARRIS, on BROOKLYN, NEW YORK.

IMPROVEMENT IN LOCKING NUTS ON BOLTS.

Specification forming part of Letters Patent No. 128,389, dated June 25,1872.

7 of the nut. This, however, is liable to break a turning-button, thestem of which passes through the fish-plate, rendering it necessary toprovide a hole especially for that stem.

My invention relates to a base-plate beneath two or more nuts, and heldby them in combination with an external removable lockingplate connectedto the base-plate, so that, after the nuts have been screwed up, thelockingplate can be put over them and secured with facility by beingattached to the base-plate by a key or equivalent connecting device, thereverse'operation allowing the locking-plate to be removed and the nutstightened or loosened, as occasion may require.

In the drawing, Figure 1 shows the locking device complete as applied totwo nuts. Fig. 2 is a sectional plan of the same at the line a: m, Fig.1; and Fig. 3 represents avariation in the said attachment of thelocking-plate.

The railroad bar a, fish or joint plates 1) c, and bolts (1, and nuts 0are to be of any desired character. Beneath two or more of the nuts 0 isthe base-plate 0, and outside of this is the locking-plate r. This plate1" is adapted to set against or receive into openings in it the flat orpolygonal sides of the nutse, and the plates 0 and 1' are connectedtogether.

As a means of connecting these plates 0 and TI have shown a loop bent upin the platen projecting through an opening in the plate 1", and

a key (which may be of wood) passed between this loop and the front ofthe plate 1" to retain the latter in place. This plate 1' should be madein a slightly-arched form to make a spring to aid in preventing the keyit being disconnected.

The key that connects the plate 1" to the plate 0 is shown in Fig. 3 asa part of the plate 1", and marked 1".

I claim as my invention-- The base-plate o passing beneath the nuts, incombination with the locking-plate r acting to hold the nuts fromturning, and a removable key to connect the plates 0 and 1' together,substantially as set forth.

Signed by me this 7th day of June, A. D.

GEORGE J. HARRIS.

Witnesses GHAs. H. SMITH, GEO. T. PINoKNE

